386 vs 486 \ VOGONS

386 vs 486

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First post, by Guest

Posted on 2003-12-26, 12:28

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As far as i know Dosbox emulates a 386 and its instructions. Although slow for many latter Dos games,still these games work. The problem is that some games ( i already know one : Synnergist ) refuse to run saying for example " error : 386 cpu detected : 486 is required". With Synnergist that i have tried, it is not a matter of speed as i increased the cycles and nothing happend, it must be a matter of instructions or smth, but i don't know for sure. Any opinions on the subject?

Reply 1 of 6, by blusk

Posted on 2003-12-26, 12:44

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It'd be nice if you could (once 486 level instructions begin to be added) select which processor you want DOSBox to emulate. However, I'll be happy with 386 emulation, myself! 😉

Brian

Reply 2 of 6, by icemann

Posted on 2003-12-27, 03:03

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That`d be a LONG ways off, but I`d love for a cpu choice to be available at some later stage. Maybe have it as a choice when you startup dosbox each time.

Two stones, two crosses, the rest is just icing. - 7th Guest

Reply 3 of 6, by Harekiet

Posted on 2003-12-27, 09:25

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You can't just enable disable to not emulate certain instructions without making things crap slow because of all the extra testing.

Reply 4 of 6, by blusk

Posted on 2003-12-28, 01:24

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Actually, I believe we are referring to after you guys have basically perfected 386 emulation, you could then add a separate set of instructions that represent the extra functions of the 486. If added carefully (although I'm no expert), flipping the extra CPU opcodes on and off would be a snap.

Brian

Reply 5 of 6, by Darkfalz

Posted on 2003-12-28, 05:21

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Well are there any 386 games refused to run on a 486? I can't remember any (although there were 386/486 games which didn't run on a Pentium).

Reply 6 of 6, by Guest

Posted on 2003-12-28, 15:09

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Yes, I believe there were some... I cannot recall any titles, but I do remember that there was a crap pseudo-3D game consisting of fighting flying critters in a maze, and it refused to run on a 386 when it detected its presence. I even seem to remember a small TSR that was supposed to fool applications into thinking it was running on a higher processor than the actual one.

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